position_iterator< Deref, Dim > Struct Template Reference

An iterator that remembers its current X,Y position and invokes a function object with it upon dereferencing. Used to create virtual image views. Models: StepIteratorConcept, PixelIteratorConcept, PixelBasedConcept, HasDynamicXStepTypeConcept. More...

#include <position_iterator.hpp>

Inherits iterator_facade< position_iterator< Deref, Dim >, Deref::value_type, std::random_access_iterator_tag, Deref::reference, Deref::argument_type::template axis< Dim >::coord_t >.

Public Types
using	parent_t = iterator_facade< position_iterator< Deref, Dim >, typename Deref::value_type, std::random_access_iterator_tag, typename Deref::reference, typename Deref::argument_type::template axis< Dim >::coord_t >
using	difference_type = typename parent_t::difference_type
using	reference = typename parent_t::reference
using	point_t = typename Deref::argument_type

Public Member Functions
	position_iterator (const point_t &p, const point_t &step, const Deref &d)
	position_iterator (const position_iterator &p)
template<typename D >
	position_iterator (const position_iterator< D, Dim > &p)
position_iterator &	operator= (const position_iterator &p)
const point_t &	pos () const
const point_t &	step () const
const Deref &	deref_fn () const
void	set_step (difference_type s)
reference	operator[] (difference_type d) const

Friends
template<typename DE , int DI>
struct	position_iterator
class	boost::iterator_core_access

Detailed Description

template<typename Deref, int Dim>
struct boost::gil::position_iterator< Deref, Dim >

An iterator that remembers its current X,Y position and invokes a function object with it upon dereferencing. Used to create virtual image views. Models: StepIteratorConcept, PixelIteratorConcept, PixelBasedConcept, HasDynamicXStepTypeConcept.

Template Parameters

Deref	A function object that given a point returns a pixel reference. Models PixelDereferenceAdaptorConcept
Dim	Dimension to advance along

Member Function Documentation

operator[]()

reference operator[] ( difference_type  d ) const

inline

For some reason operator[] provided by iterator_adaptor returns a custom class that is convertible to reference We require our own reference because it is registered in iterator_traits

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The documentation for this struct was generated from the following file:

• position_iterator.hpp